Originally Posted by
Standalone
I'm about to try to match a new build as well, and just had a thought. Would differing rake/trail geometries wind up creating subtly different fit requirements?
I mean, if the handling or shock-absorbing characteristics of a frame are different, or handlebar shape/width, crank length, or even the Q factor in the new cranks... would your dialed in fit on bike "a" be so surely ideal on bike "b?" Just a thought experiment.
This is true, but by copying the measurements from original bike to new bike should still give you a really good starting point. I did the copy measurements thing a few years back when I got a dedicated road bike to along with my multi-tasking CX bike. After riding the road bike a few times, I did tweak the seat a little bit and ultimately flipped the stem over lowering the bars, but the initial setup still allowed me to just get out and ride without having any discomfort or needing to pull out an allen wrench every half mile.